<!DOCTYPE html>
<html lang="zh-CN">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>localStorage</title>
</head>

<body>

    <h2>localStorage</h2>
    <button onclick="saveData()">点我保存一个数据</button>
    <button onclick="readData()">点我读取一个数据</button>
    <button onclick="deleteData()">点我删除一个数据</button>
    <button onclick="deleteAllData()">点我清空一个数据</button>

    <script>
        let person = {
            name: '张三',
            age: 18
        }

        function saveData() {
            localStorage.setItem('msg', 'hello Vue!!!!');
            localStorage.setItem('number', 666);
            localStorage.setItem('person', JSON.stringify(person));
        }

        function readData() {
            console.log(localStorage.getItem('msg'));
            console.log(localStorage.getItem('number'));

            const result = localStorage.getItem('person');
            console.log(result);
        }

        function deleteData() {
            localStorage.removeItem('number');
        }

        function deleteAllData() {
            localStorage.clear();
        }

    </script>

</body>

</html>